SV jammed advance lever

sandy_ada · 06-15-2018, 08:16 PM

The advance lever on my SV will only advance about a quarter of the way before running into resistance. There's no film in it, and the mirror is in the down position where it should be. I think my last successful advance before this felt a little "gravely", if that makes any sense, but I could just be remembering things funny. Any tips to try and solve this?

Eyewanders · 06-15-2018, 09:32 PM

Do not force it in any way, as I'm sure you're aware. I'll preface this response by saying that I've never personally been inside the SV, but your symptoms sound very similar to this:
Jammed S1a (this is for an S1a, but they are identical in many ways)
If in any doubt, stop.

The SV is not terribly expensive to CLA, being all mechanical and without any electronics.
If you're comfortable removing the bottom plate, this may be of help to you.
If not, send it to Eric Hendrickson or other reputable tech.

sandy_ada · 06-15-2018, 09:53 PM

Originally posted by chickentender

Do not force it in any way, as I'm sure you're aware. I'll preface this response by saying that I've never personally been inside the SV, but your symptoms sound very similar to this:
Jammed S1a (this is for an S1a, but they are identical in many ways)
If in any doubt, stop.

The SV is not terribly expensive to CLA, being all mechanical and without any electronics.
If you're comfortable removing the bottom plate, this may be of help to you.
If not, send it to Eric Hendrickson or other reputable tech.

Just took the baseplate off, and unfortunately the insides bore little resemblance to that SPII. I couldn't find a component that looked much like that mirror lever in it. Looking through the SV service manual now...

Eyewanders · 06-15-2018, 09:56 PM

Originally posted by sandy_ada

Just took the baseplate off, and unfortunately the insides bore little resemblance to that SPII. I couldn't find a component that looked much like that mirror lever in it. Looking through the SV service manual now...

Was worth a shot. Sorry I've not peaked in there. Sorry I've not experience working with this one.
Though I could remove the plate from mine and post up a pic of how things *should* look if that's helpful.

sandy_ada · 06-15-2018, 10:11 PM

Originally posted by chickentender

Was worth a shot. Sorry I've not peaked in there. Sorry I've not experience working with this one.
Though I could remove the plate from mine and post up a pic of how things *should* look if that's helpful.

I suppose that might help? Assuming they don't end up looking identical of course

Eyewanders · 06-15-2018, 10:15 PM

Originally posted by sandy_ada

I suppose that might help? Assuming they don't end up looking identical of course

That is possible. This is *not* wound on.

---------- Post added 06-15-18 at 10:19 PM ----------

Good luck. I'm off to bed. Don't break it more.

ctrout · 06-17-2018, 02:13 PM - **1 Like**

I have a high def video of the repair procedure that you probably need. It will take a while to upload but once it's done, I'll post the link for you here.

sandy_ada · 06-17-2018, 02:24 PM

Originally posted by ctrout

I have a high def video of the repair procedure that you probably need. It will take a while to upload but once it's done, I'll post the link for you here.

That would be perfect. Thank you.

ctrout · 06-17-2018, 03:14 PM - **3 Likes**

Here you go.

Youtu.be

Eyewanders · 06-17-2018, 03:41 PM

Originally posted by ctrout

Here you go.

Pentax SV repair - YouTube

Good show, sir.

ctrout · 06-17-2018, 03:47 PM - **1 Like**

Thanks. I was just kind of fumbling through as I filmed so I didn't anticipate a few of the issues that I created when I tried to reproduce the failure. In the end though, it all worked out and my immaculate, fully serviced SV is back up and running again. Hopefully my amateur job of me filming myself intentionally breaking and then repairing my SV will be of benifit to others.

sandy_ada · 06-17-2018, 05:36 PM

Originally posted by ctrout

Here you go.

Pentax SV repair - YouTube

Well, I got it to fire once, and then the next time I wound it to fire again, it got stuck again, even though it seems to have every piece in the same place as yours does in that stage of the wind cycle.

ctrout · 06-17-2018, 05:48 PM

I artificially caused the malfunction by stopping the silver lever from pivoting and capturing the black lever. The trouble with your SV sounds like a timing issue caused by old lube. If the lubricant in the mechanisms involved in cocking the shutter is old, it may have become slightly sticky or gummy, causing things to slow down. You could attempt to clean and relube some of the pivot points to see if that doesn't help.

sandy_ada · 06-17-2018, 05:51 PM

Originally posted by ctrout

I artificially caused the malfunction by stopping the silver lever from pivoting and capturing the black lever. The trouble with your SV sounds like a timing issue caused by old lube. If the lubricant in the mechanisms involved in cocking the shutter is old, it may have become slightly sticky or gummy, causing things to slow down. You could attempt to clean and relube some of the pivot points to see if that doesn't help.

Not sure if it’s that; Eric repaired/CLA’d it in January. The problem the first time was the silver lever failing to catch the black one, as you said.

ctrout · 06-17-2018, 07:45 PM

Since Eric just serviced your SV, he will most likely repair the issue it is having under warranty. I would contact him before doing anything else.

06-15-2018, 08:16 PM	#1
sandy_ada New Member Join Date: Oct 2017 Location: Vancouver, BC Posts: 11	SV jammed advance lever The advance lever on my SV will only advance about a quarter of the way before running into resistance. There's no film in it, and the mirror is in the down position where it should be. I think my last successful advance before this felt a little "gravely", if that makes any sense, but I could just be remembering things funny. Any tips to try and solve this?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Pentax mx jammed advanced lever	naomimorello	Film SLRs and Compact Film Cameras	5	03-04-2018 02:11 PM
MX with jammed shutter Release & advance lever	Frosty66	Film SLRs and Compact Film Cameras	5	05-24-2017 01:56 AM
Pentax P5 film film advance jammed	Nelson_Rios	Film SLRs and Compact Film Cameras	5	02-09-2016 09:14 PM
Film advance jammed on KM	Kmman	Film SLRs and Compact Film Cameras	22	09-25-2009 06:12 PM

06-15-2018, 09:32 PM	#2
Eyewanders Veteran Member Join Date: Jan 2008 Location: Land of the Salish Sea Photos: Gallery \| Albums Posts: 3,343	Do not force it in any way, as I'm sure you're aware. I'll preface this response by saying that I've never personally been inside the SV, but your symptoms sound very similar to this: Jammed S1a (this is for an S1a, but they are identical in many ways) If in any doubt, stop. The SV is not terribly expensive to CLA, being all mechanical and without any electronics. If you're comfortable removing the bottom plate, this may be of help to you. If not, send it to Eric Hendrickson or other reputable tech.

06-15-2018, 09:53 PM	#3
sandy_ada New Member Join Date: Oct 2017 Location: Vancouver, BC Posts: 11 Original Poster	Originally posted by chickentender Do not force it in any way, as I'm sure you're aware. I'll preface this response by saying that I've never personally been inside the SV, but your symptoms sound very similar to this: Jammed S1a (this is for an S1a, but they are identical in many ways) If in any doubt, stop. The SV is not terribly expensive to CLA, being all mechanical and without any electronics. If you're comfortable removing the bottom plate, this may be of help to you. If not, send it to Eric Hendrickson or other reputable tech. Just took the baseplate off, and unfortunately the insides bore little resemblance to that SPII. I couldn't find a component that looked much like that mirror lever in it. Looking through the SV service manual now...

06-15-2018, 09:56 PM	#4
Eyewanders Veteran Member Join Date: Jan 2008 Location: Land of the Salish Sea Photos: Gallery \| Albums Posts: 3,343	Originally posted by sandy_ada Just took the baseplate off, and unfortunately the insides bore little resemblance to that SPII. I couldn't find a component that looked much like that mirror lever in it. Looking through the SV service manual now... Was worth a shot. Sorry I've not peaked in there. Sorry I've not experience working with this one. Though I could remove the plate from mine and post up a pic of how things should look if that's helpful.

06-15-2018, 10:11 PM	#5
sandy_ada New Member Join Date: Oct 2017 Location: Vancouver, BC Posts: 11 Original Poster	Originally posted by chickentender Was worth a shot. Sorry I've not peaked in there. Sorry I've not experience working with this one. Though I could remove the plate from mine and post up a pic of how things should look if that's helpful. I suppose that might help? Assuming they don't end up looking identical of course

06-17-2018, 02:13 PM - 1 Like	#7
ctrout Veteran Member Join Date: Aug 2016 Photos: Gallery Posts: 444	I have a high def video of the repair procedure that you probably need. It will take a while to upload but once it's done, I'll post the link for you here.

06-17-2018, 02:24 PM	#8
sandy_ada New Member Join Date: Oct 2017 Location: Vancouver, BC Posts: 11 Original Poster	Originally posted by ctrout I have a high def video of the repair procedure that you probably need. It will take a while to upload but once it's done, I'll post the link for you here. That would be perfect. Thank you.

06-17-2018, 03:41 PM	#10
Eyewanders Veteran Member Join Date: Jan 2008 Location: Land of the Salish Sea Photos: Gallery \| Albums Posts: 3,343	Originally posted by ctrout Here you go. Pentax SV repair - YouTube Good show, sir.

06-17-2018, 03:47 PM - 1 Like	#11
ctrout Veteran Member Join Date: Aug 2016 Photos: Gallery Posts: 444	Thanks. I was just kind of fumbling through as I filmed so I didn't anticipate a few of the issues that I created when I tried to reproduce the failure. In the end though, it all worked out and my immaculate, fully serviced SV is back up and running again. Hopefully my amateur job of me filming myself intentionally breaking and then repairing my SV will be of benifit to others.

06-17-2018, 05:36 PM	#12
sandy_ada New Member Join Date: Oct 2017 Location: Vancouver, BC Posts: 11 Original Poster	Originally posted by ctrout Here you go. Pentax SV repair - YouTube Well, I got it to fire once, and then the next time I wound it to fire again, it got stuck again, even though it seems to have every piece in the same place as yours does in that stage of the wind cycle.

06-17-2018, 05:48 PM	#13
ctrout Veteran Member Join Date: Aug 2016 Photos: Gallery Posts: 444	I artificially caused the malfunction by stopping the silver lever from pivoting and capturing the black lever. The trouble with your SV sounds like a timing issue caused by old lube. If the lubricant in the mechanisms involved in cocking the shutter is old, it may have become slightly sticky or gummy, causing things to slow down. You could attempt to clean and relube some of the pivot points to see if that doesn't help.

06-17-2018, 05:51 PM	#14
sandy_ada New Member Join Date: Oct 2017 Location: Vancouver, BC Posts: 11 Original Poster	Originally posted by ctrout I artificially caused the malfunction by stopping the silver lever from pivoting and capturing the black lever. The trouble with your SV sounds like a timing issue caused by old lube. If the lubricant in the mechanisms involved in cocking the shutter is old, it may have become slightly sticky or gummy, causing things to slow down. You could attempt to clean and relube some of the pivot points to see if that doesn't help. Not sure if it’s that; Eric repaired/CLA’d it in January. The problem the first time was the silver lever failing to catch the black one, as you said.

06-17-2018, 07:45 PM	#15
ctrout Veteran Member Join Date: Aug 2016 Photos: Gallery Posts: 444	Since Eric just serviced your SV, he will most likely repair the issue it is having under warranty. I would contact him before doing anything else.